The qualities of persons who make a real difference in the church and the world are given to us in an admonition of Paul.  “Not lagging behind in diligence, fervent in spirit, serving the Lord; rejoicing in hope, persevering in tribulation, devoted to prayer, contributing to the needs of the saints, practicing hospitality” Rom 12:11-13 (NASB).  Not complaining, critical or controlling!  But faithfully serving the Lord and fellow humans!  Salt of the earth!  Lord, help me to be one of them!